Hoover, E. M. 1. (1948). The location of economic activity. McGraw-Hill Book Co.
Cita Chicago (17th ed.)Hoover, Edgar Malone 1907. The Location of Economic Activity. New York: McGraw-Hill Book Co, 1948.
Cita MLA (9th ed.)Hoover, Edgar Malone 1907. The Location of Economic Activity. McGraw-Hill Book Co, 1948.
Atenció: Aquestes cites poden no estar 100% correctes.